William h



W. H. K-OEHLER.

CAR BRAKE.

(No Model.)

' No. 437,652. Patented Sept. 30, 1890.

UNITED STATES PATENT OFFICE.

WILLIAM H. KOEHLER, OF CLEVELAND, OHIO, ASSIGNOR OF TWO THIRDS TO VALENTINE MAURER AND JOHN W. SOHUSTER, BOTH OF SAME PLACE.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent No. 437,652, dated September 30, 1890.

Application filed July 16, 1890. Serial No. 358,986. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM H. KOEHLER, a citizen of the United States, residing at Cleveland, in the county of Ouyahoga and State of Ohio, have invented certain new and useful Improvements in Brakes for Street- Bailway Motor-Cars, of which the following is a specification.

This invention relates to brakes for stopping street-railway cars; and it consists in the novel constructions and combinations, substantially as hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a top or plan View of a car-truck having my invention attached. Fig. 2 is a longitudinal section of the same. Fig. 3 is an enlarged detail View of the mechanism for operating the brakes.

A A are the axles, and NV W are the carwheels. On one of the axles I fix a grooved wheel O, Which is employed for applying power to the brakes derived from the momentum of the car.

B isa bar supported in aloop-hanger b, and hasa V-shaped portion engaging in the groove of the said wheel 0. The opposite end of said bar B is provided with a pulley-wheel 0 over which a chain or cord D passes, connected at one end with the brake-lever L, while the other end is connected to a rod M, extending to the rear of the car to connect with the brake mechanism of a trail-car, if desired.

' Above the aforesaid wheel 0 is provided a cam-pressure mechanism to be operated by a hand-lever R on the platform. It consists of a disk or plate N, attached to a sill or bar of the truck-frame. Through it is made a square upper face, which en gage With'the ca m-inclines n on the plate N,so that the turningof said ring on the plate 0 will produce an extension of the plate and roller downward for producing a downward pressure of said roller upon the bar B for the purpose of creating friction between said bar and the wheel. whereby the bar shall be drawn uponfor applying the brake mechanism to which it is attached. As a means of turning said cam-ring, it is provided with a lever 9, connected by rod H Withthe handlever R.

The brake mechanism is of the construction commonly in use.

Having described my invention, I claim as follows:

In power-brake mechanism for motor-cars, the combination, with the axle A, of grooved Wheel O, bar B, provided with pulley 0 connected by chain or cord D with. brake-lever L, and the cam-pressure mechanism consisting of the plate N, having square hole andinclines n n, plate 0, having stud 0 and roller t, and the cam-ring G, having cam-inclines, and lever g, connected to and operated by hand-lever R, substantially as specified.

WILLIAM H. KOEHLER.

Witnesses:

GEO. W. TIBBITTS, M. G. NORTON. 

